Dendrochronology is a method of dating by using tree rings.
Answer:
there
Explanation:
During the Cold War, American arms sales became part of a broader strategy to deter the Soviet Union from invading Western Europe. In the wake of the 9/11 attacks, the United States sold weapons to Afghanistan and Iraq to bolster their ability to defeat the Taliban, al Qaeda, and the Islamic State.Mar 13, 2018
Hey the answer to your question is it's the 19th century transportation system it was a route through Central North America. this is the Santa Fe will not the Oregon when I answer that in a min. the Santa Fe, Missouri with Santa Fe and New Mexico. it was pioneered in 1812 by William becknell. it was a great communication Highway until the railroad to the Santa Fe in the 1880s. the Santa Fe was near the end the El Camino Real De tierra adentro which carry trade from Mexico City. do you need to know about the Oregon Trail
The answers is the letter c